feat: industrySystem scores recipes by desire match

Adds scoreCraftableRecipes helper that scores recipes based on NPC
desires (priority * 10 for own_item match). Falls back to first
available when no desires match.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/src/systems/industrySystem.ts

@@ -1,6 +1,6 @@
 import {
   PRODUCTIVITY_THRESHOLD,
-  type Needs, type NPCBrain, type Position,
+  type Desire, type Needs, type NPCBrain, type Position,
 } from '@dflike/shared';
 import type { World } from '../ecs/World.js';
 import type { GameMap } from '../map/GameMap.js';
@@ -8,10 +8,35 @@ import type { GatheringState } from './gatheringSystem.js';
 import type { CraftingState } from './craftingSystem.js';
 import type { BuildingState, StructureData } from './buildingSystem.js';
 import type { PickupState } from './pickupSystem.js';
-import { RecipeRegistry } from '../industry/recipeRegistry.js';
+import { RecipeRegistry, type Recipe } from '../industry/recipeRegistry.js';
 import { getEffectiveStat } from './statHelpers.js';
 import { industryConfig } from '../config/industryConfig.js';
 
+function scoreCraftableRecipes(recipes: Recipe[], desires: Desire[]): Recipe {
+  if (recipes.length === 1 || desires.length === 0) return recipes[0];
+
+  let bestRecipe = recipes[0];
+  let bestScore = 0;
+
+  for (const recipe of recipes) {
+    let score = 1; // base score
+    for (const desire of desires) {
+      const f = desire.fulfillment;
+      if (f.type === 'own_item' && f.itemId === recipe.outputItemId) {
+        score += desire.priority * 10;
+      } else if (f.type === 'own_item_category') {
+        score += desire.priority * 5;
+      }
+    }
+    if (score > bestScore) {
+      bestScore = score;
+      bestRecipe = recipe;
+    }
+  }
+
+  return bestRecipe;
+}
+
 const BUILD_RECIPE_MAP: Record<string, { type: 'stockpile' | 'workshop'; subtype: string }> = {
   stockpile: { type: 'stockpile', subtype: 'general' },
   workbench: { type: 'workshop', subtype: 'workbench' },
@@ -65,7 +90,8 @@ export function industrySystem(world: World, map: GameMap): void {
     // Try craft first
     const craftRecipes = registry.findCraftable(inv).filter(r => !r.id.startsWith('build_'));
     if (craftRecipes.length > 0) {
-      const recipe = craftRecipes[0];
+      const desires = world.getComponent<Desire[]>(entity, 'desires') ?? [];
+      const recipe = scoreCraftableRecipes(craftRecipes, desires);
       const dex = getEffectiveStat(world, entity, 'dexterity');
       const baseTicks = industryConfig.craftBaseTicks;
       const ticks = Math.max(1, Math.round(baseTicks * (1 - (dex - 10) * industryConfig.craftDexterityModifier)));